Home / 12,125.40-18,184.56-4,728.20

Finding the Fourth Proportional to 12,125.40, 18,184.56 and 4,728.20

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Solution

The fourth proportional to 12,125.40, 18,184.56 and 4,728.20 is: 7,090.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.40 : 18,184.56 = 4,728.20 : x
  2. Step 2: Convert to fraction form
    12,125.40/18,184.56 = 4,728.20/x
  3. Step 3: Cross multiply
    12,125.40x = 18,184.56 × 4,728.20
  4. Step 4: Simplify right side
    12,125.40x = 85,980,236.59
  5. Step 5: Solve for x
    x = 85,980,236.59/12,125.40
  6. Step 6: Final answer
    x = 7,090.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.